Chroma subsampling - Wikipedia
Chroma subsampling is the practice of encoding images by implementing less resolution for chroma information than for luma information, taking advantage of the human visual system's lower acuity for color differences than for luminance.
Novel Chroma Subsampling Strategy Based on Mathematical Optimization ...
2015年8月24日 · In this paper, based on mathematical optimization technique, a novel chroma subsampling strategy is presented for compressing mosaic videos with arbitrary RGB-CFA structures in H.264/AVC and High Efficiency Video Coding (HEVC).
Adjusted 4:2:2 chroma subsampling strategy for ... - IEEE Xplore
In this paper, to remedy this weakness, we propose an adjusted 4:2:2 chroma subsampling strategy for compressing mosaic videos with arbitrary RGB-CFA structures in HEVC.
Chroma subsampling is a widely used technique to reduce bandwidth in many video systems. Since the human visual system has greater acuity for luminance than color, it can be useful to reduce color resolution to lower bandwidth. Video systems approximate this via …
Chroma Subsampling: 4:4:4 vs 4:2:2 vs 4:2:0 - RTINGS.com
2019年3月4日 · Chroma subsampling is a type of compression that reduces the color information in a signal in favor of luminance data. This reduces bandwidth without significantly affecting picture quality. A video signal is split into two different …
Improved universal chroma 4:2:2 subsampling for color filter …
2017年1月24日 · Considering one color filter array (CFA) video whose CFA pattern can be any sort of ten well-known CFA patterns, prior to compression in High Efficient Video Coding, this paper presents an improved universal chroma 4:2:2 subsampling method for the CFA video.
Chroma Subsampling – FFmpeg
2018年12月21日 · In ffmpeg, chroma subsampling is performed by setting the corresponding pixel format of the output video stream. If you have an original source with full color information, ffmpeg will try to retain this information by choosing a matching output pixel format.
Efficient luma modification-based chroma down-sampling and
2023年11月13日 · To improve PSNR, in conventional down-sampling format 4:2:2, 4:2:0, etc., we proposed bilinear-based efficient chroma up-sampling (BECU). BECU methods require eight neighbouring pixels where some pixels are up-sampled from the client side and some pixels are already down-sampled values at client side by BECU.
This contribution evaluates the impact of chroma subsampling using two different downsampling filters using objective metric. Objective results show that distributing 4:4:4 is more efficient than its 4:2:0 counterpart for medium to high bit-rates. For low bit-rates, this increase in efficiency is reduced and in some cases even reversed.
Low-Complexity Chroma Subsampling Using Optimal Lines of …
2021年12月8日 · A commonly used format for inputs to video coders is YUV420, which is a subsampled result from YUV444, that is transformed and demosaicked from a color filter array (CFA) format. The process of chroma subsampling is a …